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2. Magnetocaloric effect
The magnetocaloric EMC effect involves the heating and subsequent cooling of a magnetocaloric material that has been successively magnetized and demagnetized. It is the result of the change in entropy of the material due to couplings between magnetic moments and the atomic lattice under the action of an external magnetic field. It is measured by a temperature difference ΔT.
The application of a magnetic field aligns the magnetic moments, creating a form of order in the solid (magnetocaloric material).
This transition from a disordered magnetic state to an ordered state is accompanied by an increase in the intensity of atomic vibrations, raising the temperature T in the material.
For a ferromagnetic material, the entropy S can be split into three components: magnetic entropy,...
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Magnetocaloric effect
Magnetic refrigeration units
Bibliography
Software tools
3D Flux http://www.cedrat.com/fr/software/flux.html
Events
THERMAG: international conference on magnetic cooling, organized by the IIFIIR, held every two years. http://thermagv.grenoble.cnrs.fr
Cold Chain Forum: trade fair for refrigeration, air conditioning, ventilation and heat pumps, regularly presents magnetic refrigeration technology, held annually.
Patents (non-exhaustive list)
Magnetocaloric heat generator with heat exchange means between magnetocaloric elements WO 2010094854
Multi-stage magnetocaloric thermal generator with optimized heat transfer fluid drive WO 2010046559
Magnetocaloric thermal generator comprising a control member for the heat transfer fluid displacement means WO 2010061064
Active magnetic...
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
Cooltech Applications. French company specializing in the design and production of magnetic refrigeration appliances. http://www.cooltech-applications.com
Camfridge. Startup (UK) developing a low-power magnetic cooling system
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